CN104320563A - Image processing method and system - Google Patents
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- CN104320563A CN104320563A CN201410573008.7A CN201410573008A CN104320563A CN 104320563 A CN104320563 A CN 104320563A CN 201410573008 A CN201410573008 A CN 201410573008A CN 104320563 A CN104320563 A CN 104320563A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
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- Computer Graphics (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention provides an image processing method and system. The method includes the steps of receiving an input image to be displayed and comparing the resolution of the image to be displayed with the output resolution of a preset image display window; reducing the image to be displayed according to a preset reduction times when the resolution of the image to be displayed is large; outputting the reduced image to be displayed to the display window for display after performing display processing. The image processing method and system can ensure that a signal processing channel in the case of low bandwidth can smoothly perform image display processing when an image signal of high resolution is input.
Description
Technical field
The present invention relates to technical field of image processing, particularly relate to a kind of image processing method, and a kind of image processing system.
Background technology
Ultra high-definition resolution (Ultra High-Definition) comprises 4k (3840x2160), 8k (7680x4320) etc., ultra high-definition image in different resolution can bring incredible fine and smooth display effect, an one picture can carry huge amount of information, the details of picture inside is very clear simultaneously, and the effect that ultra high-definition image in different resolution shows on combination shakes very much.
The data volume of each frame of ultra high-definition image in different resolution is very large, combination shows the picture signal of needs to input and carries out frame rate conversion and convergent-divergent; If the bandwidth of frame rate conversion and convergent-divergent, can cause image frame losing not, picture signal shows not smooth.
Present stage, the processing mode on combination adopted the method improving processed clock signal frequency usually, and if input signal is 3840x2160@30Hz, the clock frequency of process is the twice of process 1920x1080@60Hz; But when image resolution ratio is increased to 8k again or image frame per second improves again, the clock frequency of signal transacting will become bottleneck, and the cost of the signal processor that can run high clock frequency is general also higher; Another kind method can by being divided into multiple subgraph by input picture, and adopt multiway images treatment channel to process, this method needs to take multichannel treatment channel resource.
Summary of the invention
Based on this, the invention provides a kind of image processing method and system, when can ensure the high-resolution picture signal of input, signal processing channel also can carry out image Graphics Processing glibly when low bandwidth.
A kind of image processing method, comprises the steps:
Receive the image to be displayed of input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
When the resolution of described image to be displayed is larger, the minification according to presetting reduces process to described image to be displayed;
Show reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing.
A kind of image processing system, comprising:
Comparison module, for receiving the image to be displayed of input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
Reduce module, for when the resolution of described image to be displayed is larger, the minification according to presetting reduces process to described image to be displayed;
First display module, for showing reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing.
Above-mentioned image processing method and system, the relatively resolution of image to be displayed and the output resolution ratio of image display window, when the resolution of image to be displayed is larger, represent that the signal processing channel of present image display window processes the larger image to be displayed of current data amount by being not enough to, therefore image to be displayed is suitably reduced after reducing image data amount, carry out image Graphics Processing again, thus ensure when inputting high-resolution picture signal, signal processing channel can carry out image display glibly when low bandwidth, and without the need to increasing signal processor cost.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of image processing method of the present invention in embodiment one.
Fig. 2 is the schematic flow sheet of image processing method of the present invention in embodiment two.
Fig. 3 is the structural representation of image processing system of the present invention in embodiment three.
Fig. 4 is the structural representation of image processing system of the present invention in embodiment four.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment one,
As shown in Figure 1, be the schematic flow sheet of image processing method of the present invention in embodiment one, comprise the steps:
The image to be displayed of S11, reception input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
S12, when the resolution of described image to be displayed is larger, according to preset minification process is reduced to described image to be displayed;
S13, to show reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing;
The image to be displayed of input, can process through image Graphics Processing module, such as frame rate conversion and convergent-divergent process, to meet the setting of image display window itself, image to be displayed shows in image display window afterwards;
Concrete, received image signal is transferred to each display unit on combination, the part being responsible for display separately sheared by each display unit to the entire image of input, and outputs to after carrying out frame rate conversion and convergent-divergent on the suitable position of display unit, thus is spliced into complete image display window;
The resolution of the display unit that combination uses is generally lower than 1920x1080, when image needs to amplify, display unit in fact only needs the part in shear signal source to amplify, and display unit can not exceed the resolution of itself to the resolution after Nonlinear magnify, normal signal treatment channel has enough bandwidth and processes; If image needs to reduce, also namely display unit is greater than the resolution of itself from the picture signal that signal source is sheared, at this moment the bandwidth of signalling channel will be not enough to process this image, now first by suitably reducing image, after reducing the data volume of image, carry out the image such as frame rate conversion and convergent-divergent Graphics Processing by display unit again, thus ensure that signal processing channel can carry out image procossing glibly when low bandwidth when inputting high-resolution picture signal.
For step S11, the image to be displayed receiving input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
In the present embodiment, need the resolution sizes detecting image to be displayed, obtain the output resolution ratio size of image display window simultaneously; If the resolution of current image to be displayed is comparatively large, the resolution of image to be displayed has exceeded the output resolution ratio of image display window, and represent that the data volume of image to be displayed is comparatively large, image to be displayed, when image display window shows, need carry out reducing process; If the resolution of current image to be displayed is less, then image to be displayed is when image display window shows, amplification process need be carried out, because the resolution of current image to be displayed does not exceed the output resolution ratio of image display window itself, the disposal ability of image display window is enough to the data volume tackling image to be displayed;
Concrete, the present embodiment is according to the output resolution ratio of the resolution of image to be displayed and described image display window, as long as the numerical value in comparison length direction or Width either direction, then can judge the resolution of image to be displayed and the output resolution ratio size of image display window, thus obtain comparative result rapidly.
For step S12, when the resolution of described image to be displayed is larger, the minification according to presetting reduces process to described image to be displayed;
According to the comparative result of step S11, when judging that the resolution of image to be displayed is larger than the output resolution ratio of image display window, follow-up image to be displayed, when image display window shows, need carry out reducing process; Now the data volume of image to be displayed is comparatively large, therefore before carrying out image Graphics Processing, reduces process to image to be displayed, to reduce the data volume of image to be displayed.
In a preferred embodiment, when image to be displayed is reduced, a suitable minification need be determined, the quality of not effect diagram picture to make image to be displayed data volume suitably reduce; Concrete, can step be comprised:
Detect the picturedeep of described image to be displayed, picturewide, bit wide and frame per second;
According to described picturedeep, picturewide, bit wide and frame per second, and current signal processing channel bandwidth, determine described minification; Wherein, described minification and picturedeep, columns, bit wide and frame per second have positive correlation, have negative correlativing relation with described signal processing channel bandwidth;
In the present embodiment, in conjunction with the picturedeep of image to be displayed, picturewide, bit wide and frame per second, and current signal processing channel bandwidth determination minification, export again so that image to be displayed is carried out suitable reducing, then carry out follow-up image procossing, thus ensure that signal processing channel also can process glibly when low bandwidth.
Concrete, described minification equals the product of described picturedeep, picturewide, bit wide and frame per second divided by described signal processing channel bandwidth, that is to say:
Minification=picturedeep * picturewide * image bit wide * frame per second/signal processing channel bandwidth;
Such as, an image attributes parameter is had to be 3840x2160@30Hz, the ultra high-definition image in different resolution of 24 bit wides inputs to display unit, and the signal processing channel bandwidth of the image display window of display unit is that (resolution is less than 1920x1080@60Hz to common image in different resolution bandwidth, i.e. 3Gbps), then:
Minification=3840*2160*24*30/3=2.
Wherein, aforesaid way calculates numerical value and can round rear as minification; By above-mentioned formulae discovery, the numerical value of minification can be determined rapidly.
In a preferred embodiment, describedly according to described minification, the step that described image to be displayed reduces to be can be:
By the image interpolation method preset, described image to be displayed is reduced; Wherein, the interpolation parameter of described image pixel interpolation method is described minification;
In the present embodiment, by interpolation method, such as simple interpolations algorithm realization is to the rapid drop process of image, and the interpolation parameter of interpolation method is described minification; Such as, when minification is 2, can by odd even pixel addition divided by 2 method by image down, other convergent-divergent multiples also can adopt similar simple interpolations algorithm realization.
For step S13, show reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing;
Process is reduced to image to be displayed, after process, the image to be displayed after reducing is exported, show in image display window after carrying out image Graphics Processing; The present embodiment controls front end signal bandwidth, ensure that follow-up signalling channel bandwidth when carrying out the image such as frame rate conversion and convergent-divergent Graphics Processing enough processes accordingly to signal, thus ensure that the fluency that image shows.
Embodiment two,
As shown in Figure 2, the schematic flow sheet of image processing method of the present invention in embodiment two, the image processing method of the present embodiment, compared with embodiment one, after the resolution of step S11, described image to be displayed and the step of the output resolution ratio of the image display window preset, also can comprise step S21:
When the resolution of described image to be displayed is less or when equaling described output resolution ratio, then output to after carrying out Graphics Processing to described image to be displayed in described image display window and show;
In the present embodiment, need the resolution sizes detecting image to be displayed, obtain the output resolution ratio size of image display window simultaneously; If the resolution of current image to be displayed is comparatively large, the resolution of image to be displayed has exceeded the output resolution ratio of image display window, and represent that the data volume of image to be displayed is comparatively large, image to be displayed, when image display window shows, need carry out reducing process; If the resolution of current image to be displayed is less, then image to be displayed is when image display window shows, according to the output resolution ratio size of image display window, amplification process need be carried out to the resolution of image to be displayed, because the resolution of current image to be displayed does not exceed the output resolution ratio of image display window itself, the disposal ability of image display window is enough to the data volume tackling image to be displayed, therefore, when the resolution of image to be displayed is less, output in described image display window after directly can carrying out Graphics Processing to described image to be displayed and show.
Embodiment three,
As shown in Figure 3, be the structural representation of image processing system of the present invention in embodiment three, comprise:
Comparison module 31, for receiving the image to be displayed of input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
Reduce module 32, for when the resolution of described image to be displayed is larger, the minification according to presetting reduces process to described image to be displayed;
First display module 33, for showing reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing;
The image to be displayed of input, can process through image Graphics Processing module, such as frame rate conversion and convergent-divergent process, to meet the setting of image display window itself, image to be displayed shows in image display window afterwards;
Concrete, received image signal is transferred to each display unit on combination, the part being responsible for display separately sheared by each display unit to the entire image of input, and outputs to after carrying out frame rate conversion and convergent-divergent on the suitable position of display unit, thus is spliced into complete image display window;
The resolution of the display unit that combination uses is generally lower than 1920x1080, when image needs to amplify, display unit in fact only needs the part in shear signal source to amplify, and display unit can not exceed the resolution of itself to the resolution after Nonlinear magnify, normal signal treatment channel has enough bandwidth and processes; If image needs to reduce, also namely display unit is greater than the resolution of itself from the picture signal that signal source is sheared, at this moment the bandwidth of signalling channel will be not enough to process this image, now first by suitably reducing image, after reducing the data volume of image, carry out the image such as frame rate conversion and convergent-divergent Graphics Processing by display unit again, thus ensure that signal processing channel can carry out image procossing glibly when low bandwidth when inputting high-resolution picture signal.
For comparison module 31, for receiving the image to be displayed of input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
In the present embodiment, need the resolution sizes detecting image to be displayed, obtain the output resolution ratio size of image display window simultaneously; If the resolution of current image to be displayed is comparatively large, the resolution of image to be displayed has exceeded the output resolution ratio of image display window, and represent that the data volume of image to be displayed is comparatively large, image to be displayed, when image display window shows, need carry out reducing process; If the resolution of current image to be displayed is less, then image to be displayed is when image display window shows, amplification process need be carried out, because the resolution of current image to be displayed does not exceed the output resolution ratio of image display window itself, the disposal ability of image display window is enough to the data volume tackling image to be displayed;
Concrete, the present embodiment is according to the output resolution ratio of the resolution of image to be displayed and described image display window, as long as the numerical value in comparison length direction or Width either direction, then can judge the resolution of image to be displayed and the output resolution ratio size of image display window, thus obtain comparative result rapidly.
For reducing module 32, for when the resolution of described image to be displayed is larger, the minification according to presetting reduces process to described image to be displayed;
According to the comparative result of comparison module 31, when judging that the resolution of image to be displayed is larger than the output resolution ratio of image display window, follow-up image to be displayed, when image display window shows, need carry out reducing process; Now the data volume of image to be displayed is comparatively large, therefore before carrying out image Graphics Processing, reduces process to image to be displayed, to reduce the data volume of image to be displayed.
In a preferred embodiment, when image to be displayed is reduced, a suitable minification need be determined, the quality of not effect diagram picture to make image to be displayed data volume suitably reduce; Concrete, described in reduce module 32 and comprise:
Detection module, for detecting the picturedeep of described image to be displayed, picturewide, bit wide and frame per second;
Minification determination module, for according to described picturedeep, picturewide, bit wide and frame per second, and current signal processing channel bandwidth, determine described minification; Wherein, described minification and picturedeep, columns, bit wide and frame per second have positive correlation, have negative correlativing relation with described signal processing channel bandwidth;
In the present embodiment, in conjunction with the picturedeep of image to be displayed, picturewide, bit wide and frame per second, and current signal processing channel bandwidth determination minification, export again so that image to be displayed is carried out suitable reducing, then carry out follow-up image procossing, thus ensure that signal processing channel also can process glibly when low bandwidth.
Concrete, described minification equals the product of described picturedeep, picturewide, bit wide and frame per second divided by described signal processing channel bandwidth, that is to say:
Minification=picturedeep * picturewide * image bit wide * frame per second/signal processing channel bandwidth;
Such as, an image attributes parameter is had to be 3840x2160@30Hz, the ultra high-definition image in different resolution of 24 bit wides inputs to display unit, and the signal processing channel bandwidth of the image display window of display unit is that (resolution is less than 1920x1080@60Hz to common image in different resolution bandwidth, i.e. 3Gbps), then:
Minification=3840*2160*24*30/3=2.
Wherein, aforesaid way calculates numerical value and can round rear as minification; By above-mentioned formulae discovery, the numerical value of minification can be determined rapidly.
In a preferred embodiment, reduce described in module also for: by preset image interpolation method described image to be displayed is reduced; Wherein, the interpolation parameter of described image pixel interpolation method is described minification;
In the present embodiment, by interpolation method, such as simple interpolations algorithm realization is to the rapid drop process of image, and the interpolation parameter of interpolation method is described minification; Such as, when minification is 2, can by odd even pixel addition divided by 2 method by image down, other convergent-divergent multiples also can adopt similar simple interpolations algorithm realization.
For the first display module 33, for showing reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing;
Process is reduced to image to be displayed, after process, the image to be displayed after reducing is exported, show in image display window after carrying out image Graphics Processing; The present embodiment controls front end signal bandwidth, ensure that follow-up signalling channel bandwidth when carrying out the image such as frame rate conversion and convergent-divergent Graphics Processing enough processes accordingly to signal, thus ensure that the fluency that image shows.
Embodiment four,
As shown in Figure 4, the structural representation of image processing system of the present invention in embodiment four, the image processing system of the present embodiment, compared with embodiment one, after comparison module, also can comprise the second display module 41, for when the resolution of described image to be displayed is less or when equaling described output resolution ratio, then output to after carrying out Graphics Processing to described image to be displayed in described image display window and show;
In the present embodiment, need the resolution sizes detecting image to be displayed, obtain the output resolution ratio size of image display window simultaneously; If the resolution of current image to be displayed is comparatively large, the resolution of image to be displayed has exceeded the output resolution ratio of image display window, and represent that the data volume of image to be displayed is comparatively large, image to be displayed, when image display window shows, need carry out reducing process; If the resolution of current image to be displayed is less, then image to be displayed is when image display window shows, according to the output resolution ratio size of image display window, amplification process need be carried out to the resolution of image to be displayed, because the resolution of current image to be displayed does not exceed the output resolution ratio of image display window itself, the disposal ability of image display window is enough to the data volume tackling image to be displayed, therefore, when the resolution of image to be displayed is less, output in described image display window after directly can carrying out Graphics Processing to described image to be displayed and show.
Image processing method of the present invention and system, the relatively resolution of image to be displayed and the output resolution ratio of image display window, when the resolution of image to be displayed is larger, represent that the signal processing channel of present image display window processes the larger image to be displayed of current data amount by being not enough to, therefore image to be displayed is suitably reduced after reducing image data amount, carry out image Graphics Processing again, thus ensure when inputting high-resolution picture signal, signal processing channel can carry out image display glibly when low bandwidth, and without the need to increasing signal processor cost.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an image processing method, is characterized in that, comprises the steps:
Receive the image to be displayed of input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
When the resolution of described image to be displayed is larger, the minification according to presetting reduces process to described image to be displayed;
Show reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing.
2. image processing method according to claim 1, is characterized in that, the minification that described basis is preset comprises the step that described image to be displayed reduces process:
Detect the picturedeep of described image to be displayed, picturewide, bit wide and frame per second;
According to described picturedeep, picturewide, bit wide and frame per second, and current signal processing channel bandwidth, determine described minification; Wherein, described minification and picturedeep, columns, bit wide and frame per second have positive correlation, have negative correlativing relation with described signal processing channel bandwidth.
3. image processing method according to claim 2, is characterized in that, described minification equals the product of described picturedeep, picturewide, bit wide and frame per second divided by described signal processing channel bandwidth.
4. image processing method according to claim 3, is characterized in that, describedly according to described minification to the step that described image to be displayed reduces is:
By the image interpolation method preset, described image to be displayed is reduced; Wherein, the interpolation parameter of described image pixel interpolation method is described minification.
5. image processing method according to claim 1, is characterized in that, after the step of the resolution of described image to be displayed and the output resolution ratio of default image display window, also comprises step:
When the resolution of described image to be displayed is less or when equaling described output resolution ratio, then output to after carrying out Graphics Processing to described image to be displayed in described image display window and show.
6. an image processing system, is characterized in that, comprising:
Comparison module, for receiving the image to be displayed of input, the resolution of more described image to be displayed and the output resolution ratio of the image display window preset;
Reduce module, for when the resolution of described image to be displayed is larger, the minification according to presetting reduces process to described image to be displayed;
First display module, for showing reducing to output in described image display window after the described image to be displayed after process carries out Graphics Processing.
7. image processing system according to claim 6, is characterized in that, described in reduce module and comprise:
Detection module, for detecting the picturedeep of described image to be displayed, picturewide, bit wide and frame per second;
Minification determination module, for according to described picturedeep, picturewide, bit wide and frame per second, and current signal processing channel bandwidth, determine described minification; Wherein, described minification and picturedeep, columns, bit wide and frame per second have positive correlation, have negative correlativing relation with described signal processing channel bandwidth.
8. image processing system according to claim 7, is characterized in that, described minification equals the product of described picturedeep, picturewide, bit wide and frame per second divided by described signal processing channel bandwidth.
9. image processing system according to claim 8, is characterized in that, described in reduce module also for: by preset image interpolation method described image to be displayed is reduced; Wherein, the interpolation parameter of described image pixel interpolation method is described minification.
10. image processing system according to claim 6, it is characterized in that, also comprise the second display module, for when the resolution of described image to be displayed is less or when equaling described output resolution ratio, then output to after carrying out Graphics Processing to described image to be displayed in described image display window and show.
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| CN113963650B (en) * | 2021-10-11 | 2023-07-04 | Tcl华星光电技术有限公司 | Driving device and display apparatus |
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